TCP/IP Message from Python to Simulink?

Question

I have a Simulink block, accepting TCP/IP connections and reading the incoming data. The data has to be integers of type int32. Imagine we have a variable of any integer number in Python. We can convert the number to a string and send it via a tcp socket. So far no Problem. But how to convert the number to that kind of string, that my Simulink blocks receives the number in int32 format?

Answer 1

When your Simulink TCP/IP block expects raw 4-byte binary data representing an int32, you must send the number in that exact byte form, not as a textual string.